Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near national median SD
Illinois bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
- 7.9%
- Structurally deficient
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges rated 0-4
Structurally Deficient
7.9%
2,186 bridges flagged for repair priority
0.9pp vs national avg 7.0%
Illinois vs national bridge condition
Illinois — Good condition share 41.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Illinois — Structurally deficient share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Illinois (FHWA NBI)
Counties (102)
Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222
Illinois vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.
44
Rhode Island
7.69% top marginal rate
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by composite NBI rating. Each is inspected at least every 24 months.
FAS 1599
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: E FK MAZONRIVER
0.05 MI W CH 16, Grundy, IL
Built 1977 Load: 1.0 t ADT: 1,400
MOOSE RD - TR 240
Structurally DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
FAP-328 (US-45)
FairOver: STREAM
1.5 MI S MILL SHOALS, White, IL
Built 1928 Load: 44.4 t ADT: 1,600
AVE "G"
FairOver: S BR ROCK RIVER
IN STERLING, Whiteside, IL
Built 1948 Load: 44.4 t ADT: 7,700
IL 50 (GOVERNORS)
FairOver: RR - CN
1.1 M S MANHATTAN RD, Will, IL
Built 1996 Load: 44.4 t ADT: 5,800
I- 55
FairOver: LILY CACHE CREEK
0.68 M N OF 143RD ST, Will, IL
Built 2007 Load: 44.4 t ADT: 81,800
IL 251
FairOver: LOVES PARK CREEK
S OF RIVER LN-LV PK, Winnebago, IL
Built 1995 Load: 44.4 t ADT: 16,300
OLD RIVER RD
FairOver: UNNAMED CREEK
.5 MI N OF ROSCOE RD, Winnebago, IL
Built 1967 Load: 44.4 t ADT: 2,900
I 90 WB
FairOver: KISHWAUKEE RIVER
.85 MI E OF I 39, Winnebago, IL
Built 2013 Load: 44.4 t ADT: 25,300
TR 579
FairOver: PIGEON CK
1.75 MI W PLAINVILLE, Adams, IL
Built 1977 Load: 44.7 t ADT: 125
I-180 SB
FairOver: IAIS RR ,I & M CANAL
0.74 MI S IL 26, Bureau, IL
Built 1968 Load: 44.7 t ADT: 2,075
I-180 NB
FairOver: IAIS RR, I & M CANAL
0.74 MI S IL 26, Bureau, IL
Built 1968 Load: 44.7 t ADT: 2,075
CH 20(FAS 502)
FairOver: SALINE BRANCH DITCH
E OF LEVERETT, Champaign, IL
Built 1980 Load: 44.7 t ADT: 2,250
FAP-828 (CC-MONT B
FairOver: L WABASH RIVER OVFLO
.75 MI N CLAY CITY, Clay, IL
Built 1952 Load: 44.7 t ADT: 1,850
ASHLAND AVE
FairOver: LITTLE CAL RIVER
0.5 N 138TH ST, Cook, IL
Built 1930 Load: 44.7 t ADT: 17,700
IL 68 (DUNDEE RD)
FairOver: W F N BR CHICAGO RIV
0.5 M W ILL 43, Cook, IL
Built 1957 Load: 44.7 t ADT: 24,600
STONY ISLND TO I94
FairOver: RR - NS & WOODLAWN
E I-90,94, Cook, IL
Built 1970 Load: 44.7 t ADT: 39,800
US 45,IL 21,MILW.A
FairOver: WHEELING DRAIN DITCH
0.4 M N PALATINE RD, Cook, IL
Built 1996 Load: 44.7 t ADT: 28,200
I-294 SB
FairOver: W.C.RR
1 M N ILL 19 P9, Cook, IL
Built 1958 Load: 44.7 t ADT: 96,850
I-294 SB
FairOver: FLAG CR SOUTH
0.2 M N US 66 P10, Cook, IL
Built 1958 Load: 44.7 t ADT: 59,750
I-74 (EB)
FairOver: TRIB TO SALT CREEK
N FARMER CITY, De Witt, IL
Built 1970 Load: 44.7 t ADT: 10,600
I-74 (WB)
FairOver: TRIB TO SALT CREEK
N FARMER CITY, De Witt, IL
Built 1970 Load: 44.7 t ADT: 10,600
IL 54 (FAP 71)
FairOver: TRIB TO SALT CREEK
E FARMER CITY, De Witt, IL
Built 1970 Load: 44.7 t ADT: 3,550
US 20
FairOver: SALT CREEK
WOODDALE & US 20, DuPage, IL
Built 1969 Load: 44.7 t ADT: 28,500
TR 317
FairOver: SUGAR CREEK
400 N, 2000 E, Edgar, IL
Built 2001 Load: 44.7 t ADT: 50
ILL 47
FairOver: BREWSTER RUN
N OF I-55, Grundy, IL
Built 2004 Load: 44.7 t ADT: 3,600
ILL 34
FairOver: ROSE CREEK
1.7 MI S OF HEROD, Hardin, IL
Built 1924 Load: 44.7 t ADT: 1,400
ILL 94
FairOver: DUGOUT CREEK
.5 MI S TERRE HAUTE, Henderson, IL
Built 2002 Load: 44.7 t ADT: 1,050
FAP-781 (ILL-33)
FairOver: CROOKED CREEK
2.75 MI E ILL-130, Jasper, IL
Built 1923 Load: 44.7 t ADT: 3,000
CH 14
FairOver: N FORK EMBARRAS R
3.3 MI E HUNT, Jasper, IL
Built 1999 Load: 44.7 t ADT: 125
HAZEL STREET
FairOver: W FK N BR CHGO RIV
.4 M E 94 1.9 M S 22, Lake, IL
Built 1968 Load: 44.7 t ADT: 1,450
I-94 SB
FairOver: C M S P & P RR
I94 2M S OF ILL 137, Lake, IL
Built 1958 Load: 44.7 t ADT: 67,600
I-94 NB
FairOver: CMSP & P RR
I94 2M S OF ILL 137, Lake, IL
Built 1958 Load: 44.7 t ADT: 67,600
TR 32
FairOver: LONG POINT CREEK
2680 N, 600 E, Livingston, IL
Built 1965 Load: 44.7 t ADT: 50
FAS 561/CH 9PRIMM
FairOver: SALT CK
5.75 MI S LINCOLN, Logan, IL
Built 1976 Load: 44.7 t ADT: 500
I-72 (EB)
FairOver: STEVENS CREEK
S EDGE FORSYTH, Macon, IL
Built 1974 Load: 44.7 t ADT: 6,400
I-72 (WB)
FairOver: STEVENS CREEK
S EDGE FORSYTH, Macon, IL
Built 1974 Load: 44.7 t ADT: 6,400
IL 111
FairOver: UPRR
2 M N 270, Madison, IL
Built 1940 Load: 44.7 t ADT: 4,800
FAS 2735
FairOver: E FK SHERRY CK
1.6MI E PRRTWN, Madison, IL
Built 1950 Load: 44.7 t ADT: 1,800
IL 336EB
FairOver: BNSF RR
SW OF TENNESSEE, McDonough, IL
Built 2008 Load: 44.7 t ADT: 3,900
IL 336WB
FairOver: BNSF RR
SW OF TENNESSEE, McDonough, IL
Built 2008 Load: 44.7 t ADT: 3,900
LAWRENCE ROAD
FairOver: PISCASAW CREEK
.1MI E OF WEIDNER RD, McHenry, IL
Built 2013 Load: 44.7 t ADT: 350
FAS 386 (TAYLOR RD
FairOver: KICKAPOO CREEK
SW1/4 19 KICKAPOO TW, Peoria, IL
Built 1977 Load: 44.7 t ADT: 3,000
FAS 940
FairOver: BIG CR
3 MI W PERKS, Pulaski, IL
Built 1986 Load: 44.7 t ADT: 350
FAS 940
FairOver: CACHE RIV TRIB
2 MI W PERKS, Pulaski, IL
Built 1986 Load: 44.7 t ADT: 350
FAI 255 NB
FairOver: HARDING DITCH south
0.5 MI N ST CLAIR AV, St. Clair, IL
Built 1982 Load: 44.7 t ADT: 22,300
FAS 1911-OLD US 51
FairOver: CNIC RR
COBDEN, Union, IL
Built 1997 Load: 44.7 t ADT: 3,050
FAS RT 831
FairOver: BR OF ARCHIE CREEK
3.5 MI NW OF OAKDALE, Washington, IL
Built 1968 Load: 44.7 t ADT: 400
BELL RD
FairOver: LONG RUN CREEK
0.3 MI S COOK CO LIN, Will, IL
Built 1962 Load: 44.7 t ADT: 11,200
PATTERSON ROAD
FairOver: UNNAMED CREEK
0.3 MI N OF RT 75, Winnebago, IL
Built 1976 Load: 44.7 t ADT: 275
IL 29
FairOver: BIG BUREAU CREEK
0.1 MI S JCT ILL 26, Bureau, IL
Built 1964 Load: 45.0 t ADT: 750
ILL 78
FairOver: CARROLL CREEK
1.1 MI N JCT ILL 64, Carroll, IL
Built 2002 Load: 45.0 t ADT: 1,900
Showing 12,801-12,850 of 27,743 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.